Giovanni Battista Martini,
(24 April 1706 - 3 August 1784),
also known as Padre Martini, or
Giambattista Martini, was an Italian Conventual Franciscan friar, who was a leading musician and composer of the
Giovanni Battista Martini was born at Bologna, in that era part of the Papal
Most contemporary musicians speak of Martini with admiration, and Leopold Mozart consulted him with regard to the talents of his son, Wolfgang Amadeus Mozart. The latter went on to write the friar in very effusive terms after a visit to the city.
- from Wikipedia
if you want to listen to another pièce of Martini: